Yoke for cross shaft universal joint

A yoke for a cross shaft universal joint, comprising:

• a base part for connecting and fixing the end of a rotation shaft thereto;
• and
• a pair of connecting arm parts respectively extending in the axial direction from two diametrically opposite positions corresponding to the base part at one axial end edge of the base part, wherein:
• the pair of connecting arm parts include a pair of circular holes formed at tip portions thereof to be concentric with each other, the pair of circular holes being configured to pivotally support the end of a shaft part, forming a cross shaft, through bearings;
• the base part has a partially-lacking cylindrical shape and includes a discontinuous part penetrating in the axial direction therethrough in one circumferential location of the base part, the one circumferential location existing between the paired connecting arm parts and being 90° out of phase with the paired connecting arm parts in the circumferential direction;
• the base part includes:
• a pair of flange parts formed across the discontinuous part;
• and a pair of mounting holes formed in the mutually matching portions of the pair of flange parts;
• and
• the paired mounting holes are formed such that the respective axes thereof are inclined relative to the axes of the paired circular holes, and mutually approaching forces are applied to the paired connecting arm parts in a direction inclined relative to the axes of the circular holes by putting the paired flange parts nearer to each other up to a dimension capable of fixing the end of the rotation shaft within the base part.